It depends on what you want. If you're only looking for a little one to pump up an air tank, they can be had for under $150 in most cases. If you want loads of pressure, bottled gas is more reasonable for the average spudder (high pressure compressors can run up well over $5k, even for the cheaper ones).

You will be much more successful if you learn by reading than if we spoonfeed you all the information. Never, ever play with a potentially dangerous device that you don't understand. Problems are inevitable if you do.

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Spudfiles' resident expert on all things that sail through the air at improbable speeds, trailing an incandescent wake of ionized air, dissociated polymers and metal oxides.

blind is right. ABS is ok for combustion, but not exactly ideal for holding alot of pressure. If you choose to do what blind suggested. It will work. But you really should buy pvc pipe instead of trying to pressurize your abs.

Yea thats what the 50 foot kind is. But the recoil type i linked to would be much easier. It is probably more that long enough for the specific application and it has 1/4 inch male thread. So, he would not need a hose barb. He could just thread the end directly into his pipe.